It cleans your soldering tips without water,meaning less chance of oxidation and it will not reduce the tips temperature.Made from brass coils, which is softer than the tip plating,yet harder than the oxidation that forms on the tip.To clean the tip, simply plunge (stab) the iron into the holder,a great alternative to a wet sponge. 100% Brand NewLead freeSmokeless, tasteless, non-toxic, no pollution.Made of low abrasive brass shavingsBetter than conventional spongesWon't damage your soldering tips